3 # The author disclaims copyright to this source code. In place of
4 # a legal notice, here is a blessing:
6 # May you do good and not evil.
7 # May you find forgiveness for yourself and forgive others.
8 # May you share freely, never taking more than you give.
10 #***********************************************************************
12 set testdir [file dirname $argv0]
13 source $testdir/tester.tcl
14 set testprefix bestindex3
21 #-------------------------------------------------------------------------
22 # Virtual table callback for a virtual table named $tbl.
24 # The table created is:
26 # "CREATE TABLE t1 (a, b, c)"
28 # This virtual table supports both LIKE and = operators on all columns.
30 proc vtab_cmd {bOmit method args} {
33 return "CREATE TABLE t1(a, b, c)"
37 set hdl [lindex $args 0]
38 set clist [$hdl constraints]
39 set orderby [$hdl orderby]
44 if {$bOmit} {set use omit}
46 for {set i 0} {$i < [llength $clist]} {incr i} {
48 array set C [lindex $clist $i]
49 if {$C(usable) && ($C(op)=="like" || $C(op)=="eq")} {
52 lappend ret "[lindex {a b c} $C(column)] [string toupper $C(op)] ?"
58 lappend ret cost 1000000 rows 1000000
60 lappend ret cost 100 rows 10
66 foreach {idxnum idxstr param} $args {}
68 if {$bOmit && $idxstr != ""} {
69 set where " WHERE [string map [list ? '$param' EQ =] $idxstr]"
71 return [list sql "SELECT rowid, * FROM ttt$where"]
77 register_tcl_module db
80 CREATE VIRTUAL TABLE t1 USING tcl("vtab_cmd 0");
84 SELECT * FROM t1 WHERE a LIKE 'abc';
85 } {SCAN t1 VIRTUAL TABLE INDEX 0:a LIKE ?}
88 SELECT * FROM t1 WHERE a = 'abc';
89 } {SCAN t1 VIRTUAL TABLE INDEX 0:a EQ ?}
92 SELECT * FROM t1 WHERE a = 'abc' OR b = 'def';
97 | `--SCAN t1 VIRTUAL TABLE INDEX 0:a EQ ?
99 `--SCAN t1 VIRTUAL TABLE INDEX 0:b EQ ?
103 SELECT * FROM t1 WHERE a LIKE 'abc%' OR b = 'def';
108 | `--SCAN t1 VIRTUAL TABLE INDEX 0:a LIKE ?
110 `--SCAN t1 VIRTUAL TABLE INDEX 0:b EQ ?
113 do_execsql_test 1.5 {
114 CREATE TABLE ttt(a, b, c);
116 INSERT INTO ttt VALUES(1, 'two', 'three');
117 INSERT INTO ttt VALUES(2, 'one', 'two');
118 INSERT INTO ttt VALUES(3, 'three', 'one');
119 INSERT INTO ttt VALUES(4, 'y', 'one');
120 INSERT INTO ttt VALUES(5, 'x', 'two');
121 INSERT INTO ttt VALUES(6, 'y', 'three');
125 do_execsql_test 1.6.$omit.0 "
127 CREATE VIRTUAL TABLE t1 USING tcl('vtab_cmd $omit');
129 do_execsql_test 1.6.$omit.1 {
130 SELECT rowid FROM t1 WHERE c LIKE 'o%'
133 do_execsql_test 1.6.$omit.2 {
134 SELECT rowid FROM t1 WHERE c LIKE 'o%' OR b='y'
137 do_execsql_test 1.6.$omit.3 {
138 SELECT rowid FROM t1 WHERE c = 'three' OR c LIKE 'o%'
142 #-------------------------------------------------------------------------
143 # Test the same pattern works with ordinary tables.
145 # This test does not work if the ICU extension is enabled. ICU overrides
146 # LIKE - and this optimization only works with the built-in LIKE function.
149 do_execsql_test 2.1 {
150 CREATE TABLE t2(x TEXT COLLATE nocase, y TEXT);
151 CREATE INDEX t2x ON t2(x COLLATE nocase);
152 CREATE INDEX t2y ON t2(y);
156 SELECT * FROM t2 WHERE x LIKE 'abc%' OR y = 'def'
157 } [string map {"\n " \n} {
161 | `--SEARCH t2 USING INDEX t2x (x>? AND x<?)
163 `--SEARCH t2 USING INDEX t2y (y=?)
167 #-------------------------------------------------------------------------
168 # Test that any PRIMARY KEY within a sqlite3_decl_vtab() CREATE TABLE
169 # statement is currently ignored.
171 proc vvv_command {method args} {
173 xConnect { return "CREATE TABLE t1(a PRIMARY KEY, b, c)" }
176 proc yyy_command {method args} {
178 xConnect { return "CREATE TABLE t1(a, b, c, PRIMARY KEY(a, b))" }
182 do_execsql_test 3.1 { CREATE VIRTUAL TABLE t3 USING tcl('vvv_command') }
183 do_execsql_test 3.2 { CREATE VIRTUAL TABLE t4 USING tcl('yyy_command') }